Briquet-machine.



No. 813,657. PATENTED FEB. 27, 1906.

H.- B. MARSH.

BRIQUET MACHINE. APPLICATION FILED mums. 1905.

5 SHEETS-SHEET 1.

No. 813,657. PATENTED FEB. 27, 1905.

H. E. MARSH.

'BRIQUEI' MACHINE. APPLICATION FILED mums, 1905.

5 SHEETSSHEET 3.

7 QAW I h g5 PATENTED FEB. 27, 1906.

H. E. MARSH. BRIQUBT MACHINE.

APPLICATION FILED MAR.13, 1905.

5 SHEBTSSHBET 4.

fiwmdZZV/Zarsh PATEN'TED FEB. 27', 1906.

H. B. MARSH.

BRIQUET MACHINE. APPLIUATION FILED mums, 1905.

5 SHEETS SHBET 5.

junction with the molding-drum and the UNITED STATES PATENT OFFICE.

HOWARD E. MARSH, OF LOS ANGELES, CALIFORNIA. ASSIGNOR OF ONE- HALF TOWILLIAM P. WAGY, OF LOS ANGELES, CALIFORNIA.

Specification of Letters Patent. Application filed hiaroh 13,1965.Serial No. 249.761.

- Patented Feb. 27, 1906.

To all whom it may concern: I

Be it known that I, HOWARD E. MARSH, a

citizen of the United States, residing at Los- Angeles, in the countyof'Los Angelesand State of California, have invented-a new andquet-machines in which a series of'moldblocks move through an orbit andover a molding-drum, the formation of the briquet belng effected while amold-block is in conejection of the briquet from the mold-blockoccurring when the mold-block has reached another point in its orbit,the filling of the mold-block taking place at still another point in itsorbit; and one of the important objects of the invention is to lessenthe amount of power re uired to move the mold-blocks through t eirorbit.

Another importantobject is to provide a novel mold block and compressingplunger which will produce a more perfectly finished briquet thanheretofore.

Another object is to provide novel and efficient mechanism forintermittently moving the'mold-blocks'step by step through their orbitand maintaining a mold-block stationary while the compression of thebriquet is being accomplished. i

Another important object is to provide a throw-out mechanism by whichthe coinpressingmechanism may be thrown out of operation withoutstopping the machine or stop ing any of the other functions of the mac'ne. I

Another object is to provide means for positively holding a molding-drumstationary and Another object is to provide a novel mechanism foractuating the molding-plungers in ejecting the briquet.

Other objects and advantages of the nvention will appear in thefollowing description. V

This inventionis an improvement on the in place.

briquet-machine for which I filed application June 2, 1904, Serial No,210,768, (patented April 4,1905, No. 786,773;) and an object of theinvention is to do away with the stress andstrain which was found inactual practice 4 to exist with the former machine. This object is inpart accomplished by guiding the mold *boxes'by means which are inclineddownwardlyin the direction toward which the moldboxes travel, so thatthe weight of the moldboxes is applied to assist in driving the machineexcept while engaging the molding-drum.

ustrate the The accompanying drawings il invention.

Referring to the drawings, Figure 1 is a plan view of the invention.Fig. 2'isa'seetion on the line 1: 00 Fig. 1. Fig. 3 is a side elevationof the invention. tional view on line w 20 Fig. 2. Fig. 5 is a sectionalview onlineat 113 Fig. 2. Fig. 6 is a side elevation of part of theintermittent gearing for actuating the moldingdrum.

Fig. 7 1s a side elevation,partly in'section, of

part of the throw-out mechanisrn- Fig 8 is a sectional view'on line' 'ac00-, 'Fig. 1. ig. 9

is a perspective view, the fore round of which is a section takendiametrica ly throu h the moldin -cavity or matrix of a moldinglock. Themoldin -plunger'is shown in perspective ig."'1O .isa perspective ofpartof the throw-out mechanism,showing the springbuffer. Fig. 11 is-aperspective of a slide'for positioning the molding-drum. Fig. 12 'is aside view'of the sto motion cam.

1 desi nates the ass of the machine, having side ames 2. Thehead-casting 3 of the frame is fastened to the side frames 2 by bolts4,-while the foot-casting 5 of the machine is fastened to the s ideframes 2 by similar bolts 4, as shown in- Fig. 3. A drum-shaft 6 ismounted inbearings 7, which are provided on each side of-the frame. Theaxis of the shaft 6 is on a line'with the joint between the head-casting3 and the side frames 2, the lower sections of the journals 7 being caston the side frames 2 and the upper sections of the journals 7 being caston the head 3.

'Mpunted upon the shaft 6 is a moldingdrum 8, having in this embodimenttwelve flat faces 9, each face forming a working or molding bed against"which the briquets are formed during the intervals between consecu-Fig, 4is a sec-' tation.'

The upper end of the head 3 is provided with journals 10, in which ismounted a main shaft 11, upon which is a fiy-wheel 12, the outer end ofthe shaft 11 being further supported by a journal 13. Mounted rigidly onthe shaft 11 is a compressing-cam 14, which works against anintermediate throw-out mechanism comprising a pendent spring buffer 15,formed of two arms pivoted to a shaft 16 and carrying at their lowerends a roller 17, against which the cam 14 works. (See Figs. 1, 2, and10.) The shaft 16 is mounted in a yoke 18, which is carried by a shaft19, mounted in brackets on the side frames 2, the yoke 18 having anupright handlever 21, by means of which the yoke may be rocked up ordown. The endsof the shaft 16 lie within slotted brackets 22, the slotsof which are curved. concentrically with the shaft 19 and which servenot only to uide the shaft 16 when the yoke 18 is rocke but also to forma rigid bearing for the shaft, especially when the shaft'is in the lowerpart of the slots in workin position.

Pivoted to the sha t '16, between thearms of the yoke 18, is a pendentplunger-buffer 23,

(see Figs. 2, 7, and 10,) having a head 24,

- which carries in this embodiment three antifriction thrust-blocks,each thrust-block comprisin a disk 25, which is rotatably connected withthe head24 by a screw 26, the head of which lies within a recess 27,formed in the head 24, there being a series of balls28 arranged betweenthe head 24 and the thrustblock 25,. which relieve the friction of thethrust-block 25 a ainst the head 24 when the former is rotate bri uet.

e lower eyes of'the spring-buffer 15 have studs 29. Compression-sprin s30 are interposed between the spring-bu er 1.5 and the plunger-buffer23, being supported by the studs 29, as shown in Fi s 2 and 10. Pro-'ecting down from the yo e 18 is an arm 31, having a stud 32, and theplunger-buffer 23 has a similar stud 33 in line with the stud 32, therebeing a compression-spring 34 interposed between the plunger-buffer 23and the during compression of a I arm 31 and retained in position by thestuds 32 and 33-. When this-throw-out mechanism stands in the positionshown in Fig. 2

with the shaft 16 in the bottom of the slotted, brackets 22,'the sring-buffer roller 17 is in the ressure-line etween cam 14 and the molin -drum, being in working position in front 0 the cam 14, while bythrowing the lever 21 to the left the shaft 16 is moved to the top ofthe slotted brackets 22, which raises the spring-buffer roller 17 andplunger-buffer 30 bodily-therewith out of the pressure-line and out ofworking position with the cam 14., the spring 34 maintaining thespring-buffer and plunger in normal position relat1vely to the yoke 18.I

Rigidly mounted. on the shaft 11 on the outside of each of the sideframes 2 are bevelgears 35, each of which meshes with a bevelgear 36,carried on a side shaft 37, mounted on each side of the side frames 2 injournals 38. The lower end of each shaft 37 carries a pair of cams 39,(see Figs. 6 and 12,) which extend through three hundred and sixtydegrees and form a helical slot 40, which extends throu h one hundredand eighty degrees and w ich at each end merges into terminal grooves41, each of which extends through ninety de' rees and lies in the planeof rotation of the s aft 37.

Mounted on theshaft 6 on each side of the side frames 2 are disks 42with pins 42, which are consecutively engaged by the respectivestop-motion cams just described, there being one pin 42 for each flatface 9 of the'molding-drum. The shafts 37 are each given one I rotationfor each rotation of the shaft 1 1, and as they rotate the pins 42 ofthe disks 42 are advanced step by step by the cams 39. While the pinslie within either of the terminal slots 41 the disks and drum arestationary, although the shafts 37 continue revolving, the movement ofthe drum being performed by the passage of the pins through theintermediate helical portion of the slot 40. Thus the molding-drum isrotated step by step, bringing a new face 9 into position for eachcomplete revolution of the shaft 1 1, the movement being accomplishedduring half of a revolution of the shaft 11 and the facebeing heldstationary during the other half of the revolution of the shaft 11. Oneach end of the molding-drum 8 are bosses 43, the function of which willbe described later.

Each side frame 2 is provided with an ovoidal orbital guide formed as agroove 44, and arranged to travel around the grooves is a seriesofmold-blocks 45, each end of each mold-block having a pair of studs 46,which ride within the grooves 44. The upper run of each roove 44 isinclined with 1ts lower end at t e foot of the machine, while the lowerrun of each groove is also inclined with its lower end at the .head ofthe machine. Thus the mold-blocks while in the upper run bf the groovesmay be moved wholly or partially by gravity from the head of the machinetoward the foot and over the small end of the orbit, and in returningfrom the foot to the head of the machine on the lower run of the groovesthey.,will also travel wholly or partially by gravity. Thus in order tomaintain a movement of the entire series of moldblocks through theirorbit practicallyall the ower. that is re .uired will be to lift themoldlocks around t e semicircular curve at the head end of the machine,as they will move through the other art of theirorbit either wholly orpartially y gravity, according to the dimensions and proportionsemployed. In any event the movement of the mold blocks through the orbitwill be accomplished back into retracted position, as shown in Fig. 2.Upon the retraction of the filling-plun gers 63 from the mold-block theseries of moldblocks are shifted to bring another moldblock into placebefore the filling-plungers 63; but this movement of the mold-blocksdoes not occur until the lungers have moved back sufficiently to c earthe moldblock which they were filling, the gearing of the stop-motioncams being arranged to produce this action. As a mold-block reaches themolding-drum its pins 46 are engaged-by the bosses 43 and it is liftedstep by step until it comes into a position in front of the compressingmechanism, and when in such. position the heads 50 of the plungers 48stand directly in front of and in register with the heads 25 of theplungerbuffer 23, and as the latter is moved forward through the mediumof the cam 14 and intermediate mechanism before described the plungers48 are simultaneously pushed in and compress the material in the threemolding-cavities into briquets, the compression being accomplished bythe resistance afforded by the compression-springs 29, the tension ofwhich is such that they will impart sufficient compression to thebriquets beforeyieldin or collapsing. As the plungers 48 are moveftowardthe flat face 9 in forming the briquets each plunger is given an axialmovement by its curved grooves 51 riding over the pins 53, so that theplun er 48 packs the briquet material more even y than if thecompression of the briquetwere accom lished Without the rotativemovement. T 's rotative move-- ment of the plunger also gives a betterfinish to the briquet. As the lungers 48 in moving in are thus iven a sight rotative movement their heads 50 are also turned, andas theressure-againstthe heads 50is borne by t e thrust-bearings 25 therotative friction is relieved by the balls 28. As the moldblock is movedstep by step along in its orbit it finally comes under theejecting-plate 80,

.and when directly under the plate and while stationary the ejectinplate80 is moved down through the me ium of the before-describedmechanism and bearing upon the heads of the three plungers in themoldblock expels the briquets from the moldblock, and they fall upon theconveyer-belt 83. During the expulsion of the briquets from themold-blocks the plungers 48 are not turned axially, as the straightslots 42 then ride over the ins 53. After the expulsion of the briquetom the mold-block the ejecting-plate 80 raises and the mold-block movesstep by step into position again in front of the filling-plungers 63,thus completing one cycle of its functions. The compression of thebriquets may be stopped at any time by throwing the handle 21 totheleft, which wi I pull the spring-buffer 17 andlunger-bufi'er 30 up outof engagement wit the cam 14,

is thus wardly inclined or and the machine will continue to run andcarry on its other functions without compressing. While the throw-outmechanism positioned, the spr ng 34 holds the plunger-buffer 23 in aconstant position relatively to the shaft 19, so that by moving thehandle 21 in the other direction to restore the compressing function theplunger-buffer 23 is guided into lace without interiering with the headsof t e plungers.

I It is to be noted that. the guide 44 is downdirected throu hout allthat portion of the orbit of said bloc s except a certain portion lessthan halfthe circumference of the molding-drum, where the entire work oflifting the blocks is accom lished by such drum, which is the initial eement for applying power to said blocks. By this construction the forceof gravity assists in moving the-blocks at all points ofrthe orbitexcept where the blocks are in direct connection with-the initialpower-applying element by which said blocks are-directly lifted andagain started on the downward course of their orbit.

What I claim is- 11. In a briquet-machine comprising a series ofdisconnected mold-blocks, means for supportingthe mold-blocks andguiding them in an orbit, the up er and lower runs of the orbit beingincline downwardly in the direction in which the blocks travel, andmeans for directly lifting the mold-blocks from the lower run to theupper run.

- 2. ,In a briquet-machine, a series of moldblocks, means for feedingmaterial to the mold blocks, andmeans forcompressing the material withinthe mold-blocks embracing a throw-out mechanism bodily movable into orout of the pressure-line.

3. In a bri uet-machine, a series of disconnected mo d-blocks, means forsupporting the mold-blocks and guidingthem downwardly through a portionof their orbit, and means for lifting the mold-blocks from the lower endto the upper end of such ortion.

4. In a briquet-machine, a mol ing-drum, a' series of mold blocks, meansfor supporting and guidin said mold-blocks an orbit over said moling-drum,means including a stop-motion cam for intermittently rotatingthe'moldin drum and" advancing the mold-blocks through the orbit.

i 5; In a briquet-machine, a series of moldblocks eachhavin amolding-cavity, a plunger in said cavity or compressing the briquet,means for coacting-witht e plun ers consecutively and operating them anmeans for axially turning each plunger during its compression of thebriquet.

6. In a briquet-machine, amold-block having a molding cavity, a plun ertherein, means for imparting a combined ongitudinal and axial movementto the plunger for com-.

pressing the briquet, and means for impart much easien'than instructures Where'the runsof the orbit substantially horizontalas in suchstructures, whether the moldblocks are pulled around by a chain-orpushed bodily in an unconnected series, the friction to be overcome,owing to the weight of the moldblocks upon their guide, is considerable;but

in the resent construction the mold-blocks travel 'ownwardly by gravity,being hoisted from'the bottom run to: the to run positively. In thepresent embo iment this hoistin of the mold-blocks is accomplished bythe osses 43-, which enga e between each pair of pins 46 on each en ofeach moldlockas they come into conjunction'therewith and acting upon theforward pins of the mold-block elevate the same through the semicircularortion of the orbit.

' Each mold block 45 is provided with one or more moldin -cavities ormatrices 47, in each of which ies a molding-plunger 48,

havinga stem 49, which projects through the back wall of the mold-blockand which preferabl has a head 50. Each stem 49 is provide with a pairof diametrically opposite curved grooves 51, the lower ends of thecurved grooves merging with straight grooves 52, parallel to the axis ofthe plunger, while projecting from the mold-block 45 intorthe grooves inthe stem are ins 53. Thus as the plunger is moving in t e upper part ofthe 47 it will be given a combined axial movement, while when workingiinthe lower part of the cavity 47 it molding-cavit will take a purelyrectrlineal movement. The

moldin -cavities of the mold-blocks are supplied with briquet materialat the foot of the machine, and the compression of the briquet isaccomplished at the head end of the machine, the'compression beingaccomplished by the cam 14 pressing a ainst. the springbuffer 17, which,through t e medium of .the s rin 29 and plunger-buffer 23, ushes down te unger 48 toward the fiat ace 9 of the molding-drum, the s ring 29being made stiff enough to secure t e necessary compression of thebriquet before yielding appreciably. The compression of the briquet isperformed while the molding-drum is stationary,

and in order-to hold the molding-drum positively stationary duringcompression a device is employed which comprises a pair of slides 54,one of which is arran ed on each side of the head-casting 3, each slidehaving a head 55, which is adapted to press against the adjacent flatface 9 of the molding-drum to position the same. Each slide 54 has anarm 56, carrying a roller 57, and the slides 54 are both simultaneouslymoved toward and against the flat face 9 of the molding-drum by means ofcams 58, which work against the res ectiverollers57, the cams 58 beingprefera ly formed integral with the cam 14. In

order to normally hold the'slides 54 retracted, so-that their heads 55freely clear the molding-drumto allow the same to rotate,compressionsprings 59 are provided, one for each head 55, each spring 59being supported by a pin 60, pro ecting from the head-casting 3 thehead-castingjbelng recessed on each side to accommodate the slides 54and sprin s 59.

The feeding mechanism in this em odiment comprises a ho per 61, in thebottom of which are formed t ee tubular extensions 62, in each of whichis mounted a plunger 63, the plungers 63 bein connected y a pintle 64with a yoke 65, w 'ch has an arm 66 with a sleeve 67, through which across-bar 68 asses. The bar 68 is suspended by arms 69 and 70, which arehun from a shaft 71,which is supported in journa s 72, formed onbrackets 73 on the side frames 2.

' Mounted on the shaft 11 are eccentrics 74, each of which operates aneccentric-rod 75,

each eccentric-rod 75 being connected with one of the arms as shown inFig. 2. Each eccentric-rod is preferably provided with a turnbuckle 76for adjusting its length, and each 'arm 70 has a series of bolt-holes 77for the attachment of the eccentric-rods, providing means for adjustingthe stroke of the plungers 63. In order to clean the faces of themold-blocks of any material which may have collected therein, a rotatingbrush b is employed, which carries a pulley p, driven by a belt. (Notshown.)

Rigidly fastened to the shaft 71 is a sleeve 78, having an arm 79, whichcarries an ejecting-plate 80, the length of which is suflicient toembrace the three plungers in each moldblock, as shown in Fig. 1

A bracket 81 1s attached to the side frames 2 and supports-a pulley 82,over which a conveyer-be t 83 runs, upon which belt the briquets fallwhen expelled from the mold-blocks.

In operation as the shaft 11 revolves the moldin -drum is rotated stepby ste as above escribed, through the medium 0 the stopmotion cams, themold-blocks adjacent the drum'being carried around the moldingdrum bythe bosses 43 and moving through the rest of their orbit mainly, orwholly by gravity, according to the degree of incline of the upper andlowerruns of the orbit. The filling-plungers-63 are reciprocated throughthe medium of the arms 7 0, which are operated by the eccentrics 74. Thehopper 61 is filled with material to be formed into briquets, and as thefilling-plungers 63 are retracted the material from the hopper 61 fallsdown into the tubular extensions in front of the retracted plungers, sothat as the fillingplungers move forward they push material before theminto the three molding-cavities in the mold-block which lies in front ofthe plungers. As the briquet material is thus ushed into themolding-cavities compressmgplungers 48 in the 'cavities are pushed ICCing a rectilineal movement onl to the plun-' same in an orbit, amolding-drum coacting with the mold-blocks, and means for inter:mittently bearing-directly againstthe mold-' ing-drum to hold themolding-drum rigid durm the compression of each briquet. 8. n abriquet-machine, means provided With-a face against which a briquet ispressed, a mold-block movable into conjunction with said face, andwithin which the briquet is formed, a plunger in the mold-block, andresilient means for operatim the plunger, and means for moving theresilient means bodily out of the ressure-line. I

9. a riquet-machine, means for compressing a brigigt comprising acollapsible device, the wor g tQIlSlOILOf which does not exceed thepressure 'to be imparted to the briquet, and means for moving thecollapsible device bodily out of the. pressure-line.

10.- In a briquet-machine, means for compressing a briquet comprising acompressible element, the resistance of said compressible element beingnot greater than the resistance afforded thereto by the briquet whencompressed to a definite degree, and means for moving the compressibleelement bodily out of the ressure-hne. I

11. n a briqu'et-machine, a series of dis connected mold-blocks, meansfor guiding the mold-blocks downwardly through a portion of their orbit,and a molding-drum ar-. ranged to lift the blocks from the lower end tot e upper end of said portion.

12. In a briquet-machine, a series of moldblocks, means for advancingthe mold-blocks step by step through an orbit, a hopper having a tubularextension, a plunger in said extension for pushing material from the hoper into a mold-block, an intermediate s aft, endent arms on said shaft,a connection. cm the plunger to the pendent arms, a main shaft, aneccentric thereon, and a rod connectin the eccentric with a pendent arm.

13. n a bri uet-machine, a series of moldblocks, means or advancingthemold-blocks step by step through an orbit, a hopper having a tubularextension, a plunger in said extension for pushing material from thehopper into a mold -block, an intermediate shaft, pendent arms on saidshaft, a connection from the plunger to the pendent arms, a main shaft,an eccentric thereon, a rod connecting the eccentric with a pendent arm,and means for attaching the eccentric-rod at various points on thependent arm to adjust the stroke of said plunger.

14. In a. briquet-machir'ie, a'base having side frames each of which hasan ovoid al groove, the upper run of the grooves being inclined in enedirection from horizontal,

and the lower run of the grooves being oppositely inclined, a series ofdisconnected moldblocks, and meanson the mold-blocks projecting into thegrooves for supporting the mold-blocks.

15. In a briquet-machine, a base with side frames, each side framehaving an ovoidal groove, the upper run of the grooves being in-' clinedin one direction from the horizontal,

and the lower run of .the grooves being oppositeli inclined, a series ofdisconnected moldbloc s between the side frames and a pair of pins oneach end of each mold-block projecting into the adjacent groove.

16. In a briquet-machine, a base having side frames each of which has anovoidal groove, the upper run of the grooves being inclined in onedirection from the horizontal,

and the lower run of the grooves bein oppositely inclined, a series ofdisconnecte moldblocks, means on the mold-blocks projecting into thegrooves for supporting the moldblocks, and means for elevating themoldblocks from the lower run to the upper run of the grooves.

17. In a briquet-machine, a base with side frames, each side framehaving an ovoidal groove, the upper run of-the grooves being inclined inone direction from the horizontal, and the lower run of the groovesbeing oppositely inclined, a series of disconnected moldblocks betweenthe side frames, a pair of pins on each end of each mold-blockprojecting into the adjacent groove, and, a moldingdrum having lugs forengaging said pins to lift the mold-blocks from the lower run to theupper run ofsaid grooves. v.

18. In a bri net-machine, a series of mold blocks, means forsupportingand guidingthe mold-blocks through an orbit, plungers in the mold-blockshaving stems, a main. sh aft, a

cam carried thereby, and a throw-out mechanism between said cam and thepath of. the

.mold-blo cks.

19. In a bric net-machine, a series of moldblocks, means for supportingand guiding the mold-blocks through an orbit, plungers in themold-blocks having stems, a main shaft, a cam carried thereby, athrow-out mechanism between said cam andthe path of the moldblocks, thethrow-out mechanism comprising a pivoted spring-buffer, a pivotedplunger buffer, and spring between the two buffers.

20. In a bri net-machine, a series of moldblocks, means for supportingand guiding the mold-blocks through an orbit, plungers in themold-blocks having stems, a main shaft, a cam carried thereby, athrow-out mechanism between said cam and the path of the moldblocks, thethrow-out mechanism comprising a pivoted spring-bufier, a pivotedplungerbufi'er, a spring between. the two buffers, and a thrust-bearingcarried by the plunger-buffer for 'wcrlrin against the stem of theplunger.

21. In nriquet-machine, a series of moldand having a stud, a stu blocksmovable through an orbit, a shaft, a cam on the shaft, a throw-outmechanism between the cam and path'of the mold-blocks comprisingapivoted spring-buffer, a plungeruffer pivoted concentric with thespringbuffer, a spring between the two buffers, and means for liftingsaid buffers.

22. A series of mold blocks movable through an orbit, a shaft, a cam onthe shaft, a throw-out mechanism between the cam and the path of themold-blocks comprising a rock-shaft, a yoke carried by said rock-shaft,a hand-lever for operating said rock-shaft, a

spring-buffer pivoted to said yoke and working against said cam, aplunger-buffer pivoted to said yoke, and a spring between the twobufiers.

23. A series of mold blocks movable through an orbit, a shaft, a cam onthe shaft, a throw-out mechanism between the cam and the path of themold-blocks comprising a rockshaft, a yoke carried by said rock-shaft, ahand-lever for operating said rock-shaft, a spring-buffer pivoted tosaid yoke and working against said cam, a plunger-buffer pivoted to saidyoke, a s ring between the two buffers, and means or yieldingly holdingsaid buffers in substantially constant relation to said yokeirrespective of the position of the yoke.

24:. A series of mold-blocks movable through an orbit, a shaft, a cam onthe shaft, a throw-out-mechanism between the cam and the ath ofthemold-blocks comprising arocksha a yoke carried by said rock-shaft, a

handlever for operating said rock-shaft, a spring-buffer pivoted to saidyoke and work" ing against said earn, a plunger-buffer pivoted to saidyoke, a spring between the two buffers, an arm dependin from said yokeon the plungerbuifer, and a spring supported by said studs between saidarm and the plunger-buffer.

25. In a briquet-machine, a base with side frames, a series ofmold-bloeks movable in an orbit, means on the said frames for supportingthe mold-blocks, a molding-drum having working faces over which themold-blocks pass, a slide mounted in each side frame adacent the moldingdrum, a head on each slide for ressing against the working face of themolding-drum, and means for pressing said slides toward the drum toforce the heads against the working faces of the molding-drum.

26. In a briquet-maehine, a base with side frames, a series ofmold-blocks supportedby the side frames, a molding-drum having workingfaces with which the mold-blocksv coact, means for intermittentlyrotating the molding-drum and moving the mold-blocks, a slide on eachside frame ady'aeent the molding-drum, a head on each side, and meansfor forcing the slides toward the moldin studs between said arm an drumwhile the latter is stationary between successive steps to forcetheheads a ainst the adjacent working face of the mo dingdrum. i I

27. In a briquet-machine, a base with side frames, a seriesofmold-blocks supported by the side frames, a moldingdrum having blocksmovable through an orbit, plungers in the mold-blocks, a rotating cam, athrow-out mechanism between the cam and a plunger for operating the samecom rising a rockshaft, a yoke on the rock-sha t, a hand-lever foroperating the yoke, slotted guide-brackets, a shaft carried by the yoke,the ends of which are guided by the slottedbraekets, a sprin -bufi'ermounted on'the shaft, a plunger ufier mounted on the shaft, and a springbetween the two buffers.

29. In abriquet-machine, a series of moldblocks movable through anorbit, plungers in the mold-blocks, a rotating cam, a throw-outmechanism between the cam and a plunger for operating the same comrising a rockshaft, a yoke on the rock-sha t, a hand-lever for operatingthe oke, slotted guide-brackets, a shaft carried by the yoke, the endsof which are guided by the slotted brackets, a spring-buffer mounted onthe shaft, a plunger-buffer mounted on the shaft, a spring between thetwo buffers, an arm carried by the yoke, a stud on the arm, a stud onthe plunger-buffer, and a spring sup orted by said the plungerbuffer.

30 In a briquet-machine, a series of moldblocks movable through anorbit, plungers in the mold-blocks, a rotating cam, a throw-outmechanism between the cam and a plunger for operating the same comrising a rockshaft, a yoke on the rock-sha t, a hand-lever for operatingthe yoke, slotted guiderbrackets, a shaft carried by the yoke, the endsof which are guided by the slotted brackets, a spring-buffer mounted onthe shaft, a plumger-buffer mounted on the shaft, a spring between thetwo buffers, an arm carried by the yoke, a stud on the arm, a stud onthe pluner-buifer, a spring supported by said studs etween saidarm andthe plunger-buffer, a head revolubly mounted on the plunger-buffer, anda series of balls between the head and buffer.

31. In a bri net-machine, a series of moldbioeks movabe through anorbit, a shaft, pins on each mold-block, and means operated faces forcoacting with the flat faces of the mold-blocks and means intermittentlymovable toward the molding-drum and bearing against the flat faces inconsecutive order forholding the molding-drum rigidly stationary.

33. In a briquet-machine, a series of moldblocks movable through anorbit, a shaft, pins on each mold-block, means operated by the shaft andengaging the pins for imparting an intermittent movement to the same,and means for intermittently operating the molding-drum to impart astep-by-step movement to the mold-blocks.

'34. In a briquet-machine, a series of moldblocks movable through anorbit, ins on the ends of the mold blocks, a mol ing drum having bossesfor engaging said pins, and means for movin said molding-drum wherebythe mold-bloc s are moved by the pins coacting with the bosses.

35. In a briquet-machine, a base with side frames, each side framehaving a groove, a series of mold-blocks, a pair of pins on each end ofeach mold-block projecting into the adjacent groove in the said-frame, amoldingdrum over which the mold-blocks pass and means operated by themolding-drum for causing the mold-blocks to travel aleng said grooves.

36. A briquet-machine comprising a series of disconnected mold-blocks,means for supporting the mold-blocks and guiding them in an orbit, saidmeans comprising studs projecting from said mold-blocks and a slottedsupport in which said studs travel, the upper and lower runs of theorbit being inclined downwardly in the direction in which the blockstravel, and means for directly lifting the mold-blocks from the lowerrun to the upper run. y

In testimony whereof I have hereunto set my hand, at Los Angeles,California, this 28th day of February, 1905.

HQWARD E. MARSH.

Witnesses GEORGE T. HAOKLEY, ARTHUR P. KNIGHT.

